Surface Chemistry  MCQs

MCQs of Surface Chemistry

Showing 91 to 100 out of 203 Questions
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91.
What is the value of intercept in the graph of log xm against log p ?
(a) log 1K
(b) log mx
(c) 1n
(d) log K
Answer:

Option (d)

92.
Which of the following is correct with respect to adsorption ?
(a) ∆G < 0, ∆S > 0, ∆H < 0
(b) ∆G < 0, ∆S < 0, ∆H < 0
(c) ∆G > 0, ∆S > 0, ∆H < 0
(d) ∆G < 0, ∆S < 0, ∆H > 0
Answer:

Option (b)

93.
Which of the following situations is not suitable for physical adsorption ?
(a) ΔH < 0
(b) High temperature
(c) High pressure
(d) Low temperature
Answer:

Option (b)

94.
What is the name of the phenomenon in which absorption and adsorption occur simultaneously ?
(a) Diffusion
(b) Sorption
(c) Catalysis
(d) Conduction
Answer:

Option (b)

95.
If in a solution of dye, powder of activated charcoal is added, the intensity of the colour decreases because of _____ .
(a) sorption
(b) absorption
(c) adsorption
(d) desorption
Answer:

Option (c)

96.
Which type of process in adsorption ?
(a) Endothermic
(b) Exothermic
(c) Isothermal
(d) Isobaric
Answer:

Option (b)

97.
On which if the following factors does the adsorption of gas on solid adsorbent not depend ?
(a) On the nature of adsorbent.
(b) On the nature of adsorbate.
(c) On the pressure of the gas.
(d) On the specific area of adsorbate.
Answer:

Option (d)

98.
Which of the following phenomena is physical adsorption ?
(a) H2 on charcoal
(b) Catalysis be Fe in Haber’s process
(c) Catalysis by V2O5 to get SO3 in contact process
(d) NH3 on Ni
Answer:

Option (a)

99.
Which of the following gaseous molecule possesses high physiosorption enthalpy ?
(a) C2H6
(b) Ne
(c) H2O
(d) H2
Answer:

Option (c)

100.
Specific area is the available surface area for _____ of adsorbent
(a) 1 mg
(b) 1 g
(c) 10 g
(d) 100 g
Answer:

Option (b)

Showing 91 to 100 out of 203 Questions
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